diff -NurpP --minimal linux-2.4.24-vs1.22/Makefile linux-2.4.24-vs1.23/Makefile
--- linux-2.4.24-vs1.22/Makefile	Mon Jan  5 20:24:17 2004
+++ linux-2.4.24-vs1.23/Makefile	Mon Jan 12 05:03:14 2004
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 4
 SUBLEVEL = 24
-EXTRAVERSION = -vs1.23-fix1
+EXTRAVERSION = -vs1.23-rev3
 
 KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
 
diff -NurpP --minimal linux-2.4.24-vs1.22/fs/proc/array.c linux-2.4.24-vs1.23/fs/proc/array.c
--- linux-2.4.24-vs1.22/fs/proc/array.c	Mon Jan  5 20:24:19 2004
+++ linux-2.4.24-vs1.23/fs/proc/array.c	Mon Jan 12 05:03:14 2004
@@ -281,6 +281,7 @@ static inline char *task_cap(struct task
 			    cap_t(p->cap_bset));
 }
 
+extern spinlock_t ctx_ref_lock;
 
 int proc_pid_status(struct task_struct *task, char * buffer)
 {
@@ -300,6 +301,7 @@ int proc_pid_status(struct task_struct *
 	}
 	buffer = task_sig(task, buffer);
 	buffer = task_cap(task, buffer);
+	spin_lock(&ctx_ref_lock);
 	if (task->s_info) {
 		int i;
 
@@ -345,6 +347,7 @@ int proc_pid_status(struct task_struct *
 		buffer += sprintf (buffer,"ipv4root: 0\n");
 		buffer += sprintf (buffer,"ipv4root_bcast: 0\n");
 	}
+	spin_unlock(&ctx_ref_lock);
 #if defined(CONFIG_ARCH_S390)
 	buffer = task_show_regs(task, buffer);
 #endif
diff -NurpP --minimal linux-2.4.24-vs1.22/kernel/exit.c linux-2.4.24-vs1.23/kernel/exit.c
--- linux-2.4.24-vs1.22/kernel/exit.c	Mon Jan  5 20:24:21 2004
+++ linux-2.4.24-vs1.23/kernel/exit.c	Mon Jan 12 05:03:14 2004
@@ -24,6 +24,7 @@
 
 extern void sem_exit (void);
 extern struct task_struct *child_reaper;
+extern spinlock_t ctx_ref_lock;
 
 int getrusage(struct task_struct *, int, struct rusage *);
 
@@ -165,6 +166,7 @@ static inline void forget_original_paren
 	struct task_struct *vchild_reaper = child_reaper;
 
 	read_lock(&tasklist_lock);
+	spin_lock(&ctx_ref_lock);
 	if (father->s_info) {
 		pid_t initpid = father->s_info->initpid;
 		if ((initpid != 0) && (father->pid != initpid)) {
@@ -174,6 +176,7 @@ static inline void forget_original_paren
 				vchild_reaper = r;
 		}
 	}
+	spin_unlock(&ctx_ref_lock);
 
 	for_each_task(p) {
 		if (p->p_opptr == father) {
diff -NurpP --minimal linux-2.4.24-vs1.22/kernel/sched.c linux-2.4.24-vs1.23/kernel/sched.c
--- linux-2.4.24-vs1.22/kernel/sched.c	Mon Jan  5 20:24:21 2004
+++ linux-2.4.24-vs1.23/kernel/sched.c	Mon Jan 12 05:03:14 2004
@@ -112,6 +112,7 @@ static union {
 
 struct kernel_stat kstat;
 extern struct task_struct *child_reaper;
+extern spinlock_t ctx_ref_lock;
 
 #ifdef CONFIG_SMP
 
@@ -166,12 +167,14 @@ static inline int goodness(struct task_s
 		 * Don't do any other calculations if the time slice is
 		 * over..
 		 */
+		spin_lock(&ctx_ref_lock);
 		if (p->s_info && (p->s_info->flags & VX_INFO_SCHED)) {
 			weight = atomic_read(&p->s_info->ticks) /
 				atomic_read(&p->s_info->refcount);
 			weight = (weight+p->counter) >> 1;
 		} else
 			weight = p->counter;
+		spin_unlock(&ctx_ref_lock);
 		if (!weight)
 			goto out;
 			
@@ -628,6 +631,7 @@ repeat_schedule:
 			Reset the s_info->ticks to the sum off all
 			member processes p->counter
 		*/
+		spin_lock(&ctx_ref_lock);
 		for_each_task(p) {
 			if (p->s_info && (p->s_info->flags & VX_INFO_SCHED))
 				atomic_set(&p->s_info->ticks, 0);
@@ -637,6 +641,7 @@ repeat_schedule:
 			if (p->s_info && (p->s_info->flags & VX_INFO_SCHED))
 				atomic_add(p->counter, &p->s_info->ticks);
 		}
+		spin_unlock(&ctx_ref_lock);
 		read_unlock(&tasklist_lock);
 		spin_lock_irq(&runqueue_lock);
 		goto repeat_schedule;